PL9121

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Fixed inductors are electric components used to store energy in the form of magnetic fields. They are typically constructed of wound coils of copper wire on a ferrite core or a ceramic core, and are used to filter or regulate electrical signals, generate pulses, decrease current, dampen voltage spikes, and many more uses. The PL9121 is an example of a fixed inductor and is available in various types engineered for specific applications.

The PL9121 is an encapsulated high current, low profile fixed inductor typically used in power converter designs. It is available in two winding types: axial and radial. Both options feature a bobbin or a hand-wound construction on ferrite cores. The axial option has greater currents ratings than the radial, however it also requires extra clearance space. The rated work temperature for both styles is up to 125°C.

In terms of specifications, the PL9121 has a wide operating frequency range that covers up to 4.5MHz. It features high saturation ratings, up to 4 ampere at 1.6 mH, as well as high peak and ripple current ratings. In terms of dimensions, the radial option has a package size of 12.7 x 19.1 mm, while the axial option has a size of 15.7 x 38.1 mm. Both types have a total height of 6.6 mm.

In terms of applications, the PL9121 can be used in both power supply and consumer electronics designs. Its high current and high saturation ratings make it a desirable choice for automotive and telecom applications that require high performance. It can be used as an inverter, a step-down converter, and a buck converter. The PL9121 can also be used in scanner power supplies, consumer electronics, drones, and other high-current power converters. It is engineered for stable operation in noisy environments and features superior thermal shock tolerance.

The working principle of the PL9121 relies on the principles of electrodynamic induction. The induction coil, or the inductor, is constructed of windings of copper wire that are wrapped around a ferrite or a ceramic core. When an electric current is passed through the coil, a magnetic field is generated around it. This magnetic field acts on nearby electrons which can cause eddy currents to be generated. This has the effect of delaying the current flow and creates a counter electromotive force (EMF) which acts against the original energizing EMF. This phenomenon is known as the inductance of the inductor.

The PL9121 is constructed of multiple windings of copper wire around a ferrite core or a ceramic core. It uses the principle of electrodynamic induction to store energy in the form of a magnetic field. This magnetic field acts on nearby electrons and generates the counter electromotive force which opposes the flow of current. This fixed inductor is available in two styles – axial and radial – and is used in various applications, such as power converters and consumer electronics designs.

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